java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:30:10,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:30:10,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:30:10,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:30:10,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:30:10,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:30:10,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:30:10,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:30:10,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:30:10,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:30:10,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:30:10,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:30:10,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:30:10,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:30:10,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:30:10,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:30:10,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:30:10,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:30:10,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:30:10,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:30:10,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:30:10,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:30:10,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:30:10,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:30:10,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:30:10,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:30:10,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:30:10,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:30:10,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:30:10,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:30:10,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:30:10,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:30:10,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:30:10,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:30:10,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:30:10,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:30:10,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:30:10,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:30:10,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:30:10,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:30:10,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:30:10,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:30:10,498 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:30:10,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:30:10,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:30:10,499 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:30:10,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:30:10,501 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:30:10,501 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:30:10,501 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:30:10,501 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:30:10,502 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:30:10,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:30:10,503 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:30:10,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:30:10,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:30:10,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:30:10,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:30:10,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:30:10,504 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:30:10,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:30:10,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:30:10,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:30:10,505 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:30:10,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:30:10,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:30:10,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:30:10,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:30:10,507 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:30:10,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:30:10,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:30:10,507 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:30:10,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:30:10,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:30:10,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:30:10,562 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:30:10,563 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:30:10,564 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-10-03 02:30:10,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9f639df/8de2a1ba8b734a579db8cdedf917ae88/FLAG516660b07 [2019-10-03 02:30:11,394 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:30:11,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-10-03 02:30:11,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9f639df/8de2a1ba8b734a579db8cdedf917ae88/FLAG516660b07 [2019-10-03 02:30:11,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9f639df/8de2a1ba8b734a579db8cdedf917ae88 [2019-10-03 02:30:11,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:30:11,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:30:11,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:30:11,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:30:11,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:30:11,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc7feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11, skipping insertion in model container [2019-10-03 02:30:11,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,639 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:30:11,708 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:30:12,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:30:12,274 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:30:12,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:30:12,433 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:30:12,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12 WrapperNode [2019-10-03 02:30:12,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:30:12,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:30:12,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:30:12,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:30:12,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... [2019-10-03 02:30:12,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:30:12,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:30:12,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:30:12,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:30:12,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:30:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:30:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2019-10-03 02:30:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:30:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:30:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-03 02:30:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-03 02:30:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-03 02:30:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-03 02:30:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-03 02:30:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-03 02:30:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-03 02:30:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-03 02:30:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-03 02:30:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-03 02:30:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-03 02:30:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-03 02:30:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-03 02:30:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-03 02:30:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-03 02:30:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-03 02:30:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-03 02:30:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-03 02:30:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-03 02:30:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-03 02:30:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-03 02:30:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-03 02:30:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-03 02:30:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-03 02:30:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-03 02:30:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-03 02:30:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-03 02:30:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-03 02:30:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-03 02:30:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-03 02:30:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-03 02:30:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-03 02:30:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-03 02:30:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-03 02:30:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-03 02:30:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-03 02:30:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-03 02:30:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-03 02:30:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-03 02:30:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-03 02:30:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:30:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-03 02:30:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-03 02:30:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:30:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-03 02:30:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-03 02:30:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-03 02:30:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-03 02:30:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-03 02:30:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-03 02:30:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-03 02:30:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-03 02:30:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-03 02:30:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-03 02:30:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-03 02:30:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-03 02:30:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-03 02:30:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-03 02:30:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-03 02:30:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-03 02:30:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-03 02:30:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-03 02:30:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-03 02:30:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-03 02:30:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-03 02:30:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-03 02:30:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-03 02:30:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-03 02:30:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-03 02:30:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-03 02:30:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-03 02:30:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-03 02:30:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-03 02:30:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-03 02:30:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-03 02:30:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-03 02:30:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-03 02:30:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-03 02:30:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-03 02:30:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-03 02:30:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-03 02:30:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-03 02:30:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-03 02:30:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-03 02:30:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-03 02:30:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-03 02:30:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-03 02:30:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-03 02:30:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:30:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:30:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:30:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:30:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-03 02:30:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:30:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:30:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:30:13,036 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-03 02:30:13,278 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:30:13,278 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-03 02:30:13,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:13 BoogieIcfgContainer [2019-10-03 02:30:13,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:30:13,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:30:13,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:30:13,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:30:13,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:30:11" (1/3) ... [2019-10-03 02:30:13,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd63a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:13, skipping insertion in model container [2019-10-03 02:30:13,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:12" (2/3) ... [2019-10-03 02:30:13,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd63a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:13, skipping insertion in model container [2019-10-03 02:30:13,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:13" (3/3) ... [2019-10-03 02:30:13,291 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2019-10-03 02:30:13,303 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:30:13,319 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:30:13,342 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:30:13,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:30:13,380 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:30:13,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:30:13,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:30:13,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:30:13,381 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:30:13,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:30:13,381 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:30:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-03 02:30:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-03 02:30:13,414 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:13,415 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:13,418 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:13,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1664510762, now seen corresponding path program 1 times [2019-10-03 02:30:13,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:13,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:13,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:13,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:13,512 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:13,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:13,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:30:13,625 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:13,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:30:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:30:13,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:13,661 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-10-03 02:30:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:13,686 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-10-03 02:30:13,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:30:13,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-03 02:30:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:13,704 INFO L225 Difference]: With dead ends: 36 [2019-10-03 02:30:13,704 INFO L226 Difference]: Without dead ends: 29 [2019-10-03 02:30:13,707 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-03 02:30:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-03 02:30:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-03 02:30:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-03 02:30:13,763 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2019-10-03 02:30:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:13,764 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-03 02:30:13,764 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:30:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-03 02:30:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-03 02:30:13,766 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:13,766 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:13,766 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1646407191, now seen corresponding path program 1 times [2019-10-03 02:30:13,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:13,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:13,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:13,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:13,774 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:13,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:13,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:30:13,907 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:13,912 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:30:13,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:30:13,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:30:13,915 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2019-10-03 02:30:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:13,985 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-03 02:30:13,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:30:13,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-03 02:30:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:13,990 INFO L225 Difference]: With dead ends: 32 [2019-10-03 02:30:13,990 INFO L226 Difference]: Without dead ends: 32 [2019-10-03 02:30:13,993 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:30:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-03 02:30:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-03 02:30:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-03 02:30:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-03 02:30:14,021 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2019-10-03 02:30:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:14,022 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-03 02:30:14,022 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:30:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-03 02:30:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-03 02:30:14,025 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:14,025 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:14,026 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:14,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1145985085, now seen corresponding path program 1 times [2019-10-03 02:30:14,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:14,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:14,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:14,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:14,041 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:14,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:30:14,334 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:30:14,335 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2019-10-03 02:30:14,338 INFO L207 CegarAbsIntRunner]: [7], [10], [14], [15], [26], [27], [28], [30], [36], [38], [41], [45], [48], [51], [56], [63], [84], [85], [91], [92], [93], [94], [97], [98], [99] [2019-10-03 02:30:14,387 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:30:14,388 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:30:14,475 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:30:14,478 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-10-03 02:30:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:14,483 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:30:14,524 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-03 02:30:14,525 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:30:14,527 INFO L420 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2019-10-03 02:30:14,527 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:30:14,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:30:14,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2019-10-03 02:30:14,529 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:14,529 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:30:14,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:30:14,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:14,530 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 2 states. [2019-10-03 02:30:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:14,531 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-03 02:30:14,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:30:14,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-03 02:30:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:14,532 INFO L225 Difference]: With dead ends: 6 [2019-10-03 02:30:14,533 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:30:14,533 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:30:14,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:30:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:30:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:30:14,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-03 02:30:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:14,535 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:30:14,535 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:30:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:30:14,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:30:14,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:30:14 BoogieIcfgContainer [2019-10-03 02:30:14,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:30:14,546 INFO L168 Benchmark]: Toolchain (without parser) took 2932.27 ms. Allocated memory was 138.9 MB in the beginning and 223.3 MB in the end (delta: 84.4 MB). Free memory was 83.3 MB in the beginning and 175.6 MB in the end (delta: -92.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:30:14,547 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:30:14,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.49 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 83.1 MB in the beginning and 163.1 MB in the end (delta: -80.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:14,549 INFO L168 Benchmark]: Boogie Preprocessor took 82.90 ms. Allocated memory is still 200.3 MB. Free memory was 163.1 MB in the beginning and 160.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:14,550 INFO L168 Benchmark]: RCFGBuilder took 761.38 ms. Allocated memory is still 200.3 MB. Free memory was 160.1 MB in the beginning and 114.8 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:14,551 INFO L168 Benchmark]: TraceAbstraction took 1260.79 ms. Allocated memory was 200.3 MB in the beginning and 223.3 MB in the end (delta: 23.1 MB). Free memory was 114.2 MB in the beginning and 175.6 MB in the end (delta: -61.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:30:14,555 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 818.49 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 83.1 MB in the beginning and 163.1 MB in the end (delta: -80.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.90 ms. Allocated memory is still 200.3 MB. Free memory was 163.1 MB in the beginning and 160.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.38 ms. Allocated memory is still 200.3 MB. Free memory was 160.1 MB in the beginning and 114.8 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1260.79 ms. Allocated memory was 200.3 MB in the beginning and 223.3 MB in the end (delta: 23.1 MB). Free memory was 114.2 MB in the beginning and 175.6 MB in the end (delta: -61.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 612]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 9 SDslu, 50 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9583333333333334 AbsIntWeakeningRatio, 1.3333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 0.25 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...